[edk2-devel] [PATCHv3 0/5] MdeModulePkg/SdMmcPciHcDxe: Refactor command processing

[Albecki, Mateusz]

This patch series aims to refactor command processing to achieve following

- Trace the failing TRB packets to see what commands are failing and for what reasons
- Get the response data even if data transfer timed out to allow easier debugging
- Fix the PIO mode which is currently completely broken.

Changes in v2:
- Moved verbose packet prints after the command is finished to capture the successfull command response
- Fixed the debug prints
- PIO data will be moved with width matching the alignment of the block size. For majority of transfers that means UINT32 width.

Changes in v3
- Fixed the memory map in non DMA case(PATCHv3 4/5)

Tests performed:
- Each patch in the series has passed boot from eMMC with ADMAv3 data transfer mode
- SDMA based boot has been tested with the full patch series
- PIO based boot has been tested with the full patch series
- PIO based data transfer has been additionally tested by creating and modyfing a file in EFI shell
- Tested async PIO transfer - results below

Tests performed v3:
- Booted OS in ADMA mode(V3 64bit)
- Booted OS in PIO mode

Async test results:
After fixing memory map issue PIO works reliably in both async and sync cases on all paltforms.

All tests were performed with eMMC in HS400 @200MHz clock frequency.

For easier review & integration patch has been pushed here:
Whole series: https://github.com/malbecki/edk2/tree/emmc_transfer_refactor

Cc: Hao A Wu <hao.a.wu at intel.com>
Cc: Marcin Wojtas <mw at semihalf.com>
Cc: Zhichao Gao <zhichao.gao at intel.com>
Cc: Liming Gao <liming.gao at intel.com>


Mateusz Albecki (5):
  MdeModulePkg/SdMmcPciHcDxe: Enhance driver traces
  MdeModulePkg/SdMmcPciHcDxe: Read response on command completion
  MdeModulePkg/SdMmcPciHcDxe: Refactor data transfer completion
  MdeModulePkg/SdMmcPciHcDxe: Do not map memory for non DMA transfer
  MdeModulePkg/SdMmcPciHcDxe: Fix PIO transfer mode

 MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHcDxe.h |   4 +
 MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c   | 609 ++++++++++++++++-----
 2 files changed, 478 insertions(+), 135 deletions(-)

-- 
2.14.1.windows.1

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